Rotary harrow.



w. BLAA'SE, ROTARY HARROWQ y APPLmATl'oN min Aiz'. 10, V915. 1,184,669. v Patented May 23, 1916.

4 I A mi l W um Wwf/f v t *STATES OFFICE. f 1" AWESLEYiaaiiasn, or nrwoon, ILLINOIS;

i y y A:ROTARY HARROW. i v i 69" i Specification ofLetters Patent. Patented'luay 23, 1916.

l Application med `April 1o, 1915. seriaiNo.2o,46s. A

Be it known that I, WESLEY BLAASE, a the bracket is a murnal pin 21, which .is arcitizen of the UnitedStates, and residing at ranged at rightangles to the bracket and,

Atwom county of liatt, in the State of Illitherefore, `at right angles to the harrow 5 ;nois,ili,ave inventeda certain new and useful frame. f j

`improvement in Rotary Harrows, oflwhich Arranged Jto engage the pinis a` journal 60 as. .theifollowing is a specification. 22 mounted on a bracket 23 having a chan .in his invention `relates to Aharrows, and neled shank 24 adapted, to receive the shank l' moreprticularly-.tovfntary harrows, 25 of; a bracket 26 having a journal 27 f Some of the objects' of this invention are adapted to engage the pin. `The `shank 25 to, construct-a rotary harrow which will ef# is securedl in' the channel of the shank 24 by 65 ficiently` cultivate j the soil, which can be a bolt 28. Mounted in the channel fof the iieadilyyswung to turn corners, and which Shlnk 24 is a ychannel beam 29 and a bar30. caiiibeviotated in any' desired direction. These bars are secured, at their ends, in the l5 Another object is to provide a rotary harchannels of the shanks 24 by bolts 31. The

i-mvhaving great strength and rigidity combars 29 and 30 are bent outwardly, at their 7o n?" pared with the weight of its parts,which is centers, so as to be separated at their centers simpleisin construction, and cheap to manuto form a braced cross beam. facture-3. l, .Y f I Mounted on theyjournal pin 21 are two `Fi'ii'ther objects will appear from the dejournals 32 and 33 identical in construction tail description taken in connection with to the journals 22 and27 respectively, and 75 the accompanying "drawing, in which: j connected in the `saine way, and in the chan- Figure 1 is a plan of a, narrow embodying nel of the journalv shanks are bolted draft this invention; Fig; 2 is a rear elevation; bars 34 which are connected by clevises to 25 Fig. 8 is an enlarged section on the line 3 3 a draft beam 36 having a hole 39 in its cenline 5-5, Fig. l; and, Fig. 6 is a section on ars are arranged in interlaced relation on the line (36, Fig. 1. the journal pins, and are retained in position Referring to the accompanying drawing, by means of a grooved washer 37 and a cotit lwill be noted that the liarrow comprises tfl' P111 38- 85 two rotatable frames, each consistingr of Upon reference to Fig. 2, it will be noted channel bars 10 crossing one another. These. that the bearings formed in the journals 22 channel bars are perforated to receive the and 27 are so formed that the bearingsy on hai-row teeth 11, each of whichis provided One end 0f the Cross beam are arranged at an with a reduced threadedportion 12, extendangle to the bearings on. the other end of 9o ing through the channel and forming a the cross b eain, in fact, so that they flare shoulder 13 engaging` the channel web. The outwardly in Fig. 2. rIhis will throw the reduced threaded portion is adapted to enoutside edges of the harrow frame down 0 gage a nut 14 mounted between the channel lower than the inside edges, as shown in iianges and retained in position thereby. Fig; 2, thereby causing the outside teeth The tooth is, therefore, inserted by simply to dig into thefgrouiid deeper than the in` screwing the saine into the nut. Separate Side teeth. I, therefore, the harrow is bolts may be providedfor securing the drawn in the direction of the arrow, Fig. chani1els-togethei', butl one of the harrow 1, the outside edges of the harrow fraine teeth may be utilized for this purpose.

At the center of each frame, and at the to rotate in the `direction of the arrows, point of crossing of two of the bars 10, is Fig. 2. If, however,y the cross beam is reinounted a journal bracket 15 having radial versed, then the inside edges of the harrow arms 16 and 17. he arms 17 are provided frames will be lower than the outside edges, withribs 18 fitting between the channels on and the direction of rotation of the frames 105 one of the bars 10, and the arms 16 are prowill be reversed. Since the draft bars 34 videdwithribs 19 'fitting between the chanare pivoted to the journal pins, and since nels on the crossing bar. The bracketis sethese draft bars are also pivoted to the draft will be rotated so as to cause. these frames i beam, corners can be readilyturned because of thev link construction permitting the draft beams to swing laterally.

It will, therefore, be seen that thevinvenltion 'accomplishes its .'objects. A- harrow is' produced Which will rotate inA either difV rection so as to rotate either inwardly or' outwardly `at pleasure. The parts are'so Acor'istructed that a rigid structure is produced. This is more particularly brought about by the rigid construction of the cross'A l beam, and the'interlacedconstruction of the journals and the cross beam. The barrow y out departing teeth" can be readily cleaned and replaced.

.. It is obvious that various changes may be made inthe details of construction With-y vention. It 1s, thereftore, to be .understood that this invention is not to be limited to the specific construction-"shown and der scribed. Y

1..A rota'ry harrow comprisingl a` cross said journals being arrange .at an angle from the vertical and With respect to each other,. and means for removab said beam journals on said pms.

. 2. A rotary harrow comprising a cross y retaining from the spirit of this in,

beam, a pair of harroW` frames each com-j prising' channeled tooth. carrying members, a bracket on each frame having ribs engagingthe channels in said members, and a pinon each bracket adapted to engage said cross beam. r

A rotary harrow comprising a cross beam", a pair of lbarrow frames, a bracket on'each frame having a pin, and a journal i bracket engaging each pin, said brackets `being channeled toreceive the ends of said beam.

2li-A `rotaryr harrow comprising a cross l beam," a pairof harrovv frames, a bracket on each frame having a pin, a .journal bracket engaging said pin, and, a second journal bracketengaging each pin, said vfirst ,journal bracket being channeled to re- 'ceive the saidfsecond journal bracketand the ends of 'said bea-rn.

i .5.5A rotary harrow comprising a -pair of harrow frames, journal pins on said frames, journals on said pins, a cross bar comprising a pair ofbars closer together at their ends than at their center, andav journal on each end of said bar adapted to engagesaid pins.

In testimony whereof I alix my signa-y ture in the presence of these two Witnesses.

l WESLEY BLAASE.

f .Witnessesz l W.l T. 'HEINDSELMAM J. W. STEvEn. 

